The biggest thing I’m confused about is where the order demand was originating

“ This 3D printing business started with the help of my dog, at the time a puppy, and his desire to see my neighbor’s puppy. We (the humans) began talking, and as we ran through a conversation about dogs, the topic came to his trading card business. He’d source cards all over the internet for his daily WhatNot auctions with thousands of followers. Impressive—not only a home business doing real volume, but a lens into a world I had no idea existed.

I eventually noticed he had a 3D printed card stand, and with a printer at home, I offered to make him one myself. “Great,” he said, “I can sell them.””

So a guy selling playing cards started selling the things you 3D printed?

Is that the business?